Metal-cutting tool



LLWAGNEH, Jn. METAL CUTTING TOOL, Mmc/umn FILED MAY 7, 1921.

l. WAGNER, 5H.

METAL CUTTING TOOL APPLICATION man MAY I, 192|,

Patented ome. 35,1922.

Patented @et 3, l.

JAMES WAGNER. 3R., 0l? CLEVELNIL QTI.

METAL-CU'I'TNG TOOL.

Application filed may 7,

To all z/fhmn it may Concern.'

Be it lrnoivn that l, .latins lVAoNnn, Jr.7 a citizen of the UnitedStates, residing at Cleveland3 in the county of Cuyahoga and State ofOhio, have invented certain new and useful lrnprovements inMetal-Cutting Tools, oiu which the following is a specifica tion.

This invention is a metal cutting tool particularly adapted for cuttingor enlarging the )iston ringf grooves in pistons otinterna comlnistionand other engines, and will be enlarging,l

found particularly useful for he fitted grooves so that over-size ringsmay therein.

'lhe invention will be understood from the following description inconnection with the accompanying drawings in which Fig. 1 is a sideelevation ot' vthe tool showing a piston in dotted lines. Fig. 2 is atop plan. Fig. 3 is a vertical section. Fig. 4.- is a side ele vationfrom the left of Fig. 1. Fig. 'is a detail in perspective of a spacerwhich can be used with the device so that it may operate on small sizedpistons.

Referring .specifically to the drawings 1 indicates a cylindrical bodyor sleeve the lower part ot which is split or slotted lengthwise asindicated at 3 and erosswise as indicated at 2, the cross slot beingabout halta the diameter of the cylinder. Above the slot 2 the sleevehas an external shoulder l above which is a reduced threaded extension5.

A. rotary tool ring; or carrier 7 islmounted jto turn on the shoulder'4, and this carries l,en mlially extending cutting blade 8 clampedthereon by a plate 9 and screws 10. The in ner edge ot' the ring 7 isbevelled, and a coni-1 cal ring 11' is screwed on the extension 5 andhas 'a beveled face which tits against the incline of the ring' 7., asclearly shown in Fig. 3. This accurately centers the ring; 7 and holdsit down in place, but the ring 7 can nevertheless .be turned to effectthe 'cutting operation'. The plate 8 may beset in by a. screw 12 Workingthrough a boss 13 on the ring.'

A lug 14 is east on one side of the sleeve 1 so that it may be held in avise, as indicated by dotted linesr in. Fig. 1. Luge 15 andlt are alsoeast on the sleeve at opposite edges of the slot 3,

and clamping serevvs 1'? are tapped through these lugs to clamp thesleeve on e piston. An expanding screw 19 is also tapped through one otthe lugs and presses against thel other to open the Serial No. 467,566.

slecvt` so that it Iney be slipped on pistons of varying sizes.

llhen a' sniall piston is to be cut, a slotted cuil' 2f.) is placedaround the piston and then inserted in the sleeve. and tightened in anobvious manner.

ln use, the split sleeve is clamped piston in the manner indicated inwith the blade H registering with the groove to be cut, und then hyturning the member 'i' by means of a handle .21 the blade will cut orenlarge the piston ring groove in. a quick and serviceable manner; andit will be noted that the piston may be clamped in the sleeve Withoutremoving the connecting rod.

Aalthough particularly useful for cutting grooves in pistoni-i` thedevice may be used for cutting; grooves in other cvliiulrical articles,and no limitation with respect to the particular con-struction of theparts. or the particular use ot' the device.`is implied.

l claim:

1. A tool for cnttinfr a groove in a evlinn drical article. comprising aclamping' sleeve in which the article maybe held said sleeve having:y ashoulder around the sanieneer one end ,thereot7 a rotatable ring Fittingaround said end and resting against seid shoulder end adapted to beturned around the sleeve7 a retaining ring' screwed on the said end etthe sleeve and against said ring', and a cuttinel blade mounted on theringgand projleeting' inwardly across 'the said end or the sleeve inposition to cuta groove inan er ticle held in the sleeve.

2. A tool for cutting; a groove in e. cvlin dricel article, c nnprisin{Tn clamping; sie-eve in which the article may be held, said, sleevehaving a shoulder aroundthe seme, e rotatable ring resting against saidshoulder and adapted to be turned around the-sleeve. the inner edge ofsaid ring; being;J heveled, e retaining ring screwed on the end oli' thesleeve and having' en fluter beveled enge bearing against sa'id ring,end :t cutting blade mounted on the ring and prejecting inwardly eerossthe end the well of the sleeve in osition to eut e groove in the sleeve.anc ineens to adjust seid blade wardly.

ln testimony verlieren? l aille: signature on the 1 presence of twoWitnesses.

